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Finding the Fourth Proportional to 153,312.32, 211,390 and 104,937.52

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Solution

The fourth proportional to 153,312.32, 211,390 and 104,937.52 is: 144,689.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,312.32 : 211,390 = 104,937.52 : x
  2. Step 2: Convert to fraction form
    153,312.32/211,390 = 104,937.52/x
  3. Step 3: Cross multiply
    153,312.32x = 211,390 × 104,937.52
  4. Step 4: Simplify right side
    153,312.32x = 22,182,742,352.80
  5. Step 5: Solve for x
    x = 22,182,742,352.80/153,312.32
  6. Step 6: Final answer
    x = 144,689.89

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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.