Home / 105,031.60-157,547.40-91,909.60

Finding the Fourth Proportional to 105,031.60, 157,547.40 and 91,909.60

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Solution

The fourth proportional to 105,031.60, 157,547.40 and 91,909.60 is: 137,864.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,031.60 : 157,547.40 = 91,909.60 : x
  2. Step 2: Convert to fraction form
    105,031.60/157,547.40 = 91,909.60/x
  3. Step 3: Cross multiply
    105,031.60x = 157,547.40 × 91,909.60
  4. Step 4: Simplify right side
    105,031.60x = 14,480,118,515.04
  5. Step 5: Solve for x
    x = 14,480,118,515.04/105,031.60
  6. Step 6: Final answer
    x = 137,864.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.