Home / 153,531.28-211,869.97-85,547.98

Finding the Fourth Proportional to 153,531.28, 211,869.97 and 85,547.98

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Solution

The fourth proportional to 153,531.28, 211,869.97 and 85,547.98 is: 118,054.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,531.28 : 211,869.97 = 85,547.98 : x
  2. Step 2: Convert to fraction form
    153,531.28/211,869.97 = 85,547.98/x
  3. Step 3: Cross multiply
    153,531.28x = 211,869.97 × 85,547.98
  4. Step 4: Simplify right side
    153,531.28x = 18,125,047,956.16
  5. Step 5: Solve for x
    x = 18,125,047,956.16/153,531.28
  6. Step 6: Final answer
    x = 118,054.43

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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.