Home / 138,117,931.52-190,602,764.16-76,238,281.76

Finding the Fourth Proportional to 138,117,931.52, 190,602,764.16 and 76,238,281.76

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Solution

The fourth proportional to 138,117,931.52, 190,602,764.16 and 76,238,281.76 is: 105,208,839.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,117,931.52 : 190,602,764.16 = 76,238,281.76 : x
  2. Step 2: Convert to fraction form
    138,117,931.52/190,602,764.16 = 76,238,281.76/x
  3. Step 3: Cross multiply
    138,117,931.52x = 190,602,764.16 × 76,238,281.76
  4. Step 4: Simplify right side
    138,117,931.52x = 14,531,227,238,264,910
  5. Step 5: Solve for x
    x = 14,531,227,238,264,910/138,117,931.52
  6. Step 6: Final answer
    x = 105,208,839.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.