Home / 137,256.19-189,421.95-76,830.60

Finding the Fourth Proportional to 137,256.19, 189,421.95 and 76,830.60

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Solution

The fourth proportional to 137,256.19, 189,421.95 and 76,830.60 is: 106,030.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,256.19 : 189,421.95 = 76,830.60 : x
  2. Step 2: Convert to fraction form
    137,256.19/189,421.95 = 76,830.60/x
  3. Step 3: Cross multiply
    137,256.19x = 189,421.95 × 76,830.60
  4. Step 4: Simplify right side
    137,256.19x = 14,553,402,071.67
  5. Step 5: Solve for x
    x = 14,553,402,071.67/137,256.19
  6. Step 6: Final answer
    x = 106,030.93

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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.