Home / 103,000.04-142,206.18-70,788.20

Finding the Fourth Proportional to 103,000.04, 142,206.18 and 70,788.20

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Solution

The fourth proportional to 103,000.04, 142,206.18 and 70,788.20 is: 97,733.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,000.04 : 142,206.18 = 70,788.20 : x
  2. Step 2: Convert to fraction form
    103,000.04/142,206.18 = 70,788.20/x
  3. Step 3: Cross multiply
    103,000.04x = 142,206.18 × 70,788.20
  4. Step 4: Simplify right side
    103,000.04x = 10,066,519,511.08
  5. Step 5: Solve for x
    x = 10,066,519,511.08/103,000.04
  6. Step 6: Final answer
    x = 97,733.16

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1.5x scale

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.