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Finding the Fourth Proportional to 153,460.80, 211,808.58 and 103,130.64

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Solution

The fourth proportional to 153,460.80, 211,808.58 and 103,130.64 is: 142,342.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,460.80 : 211,808.58 = 103,130.64 : x
  2. Step 2: Convert to fraction form
    153,460.80/211,808.58 = 103,130.64/x
  3. Step 3: Cross multiply
    153,460.80x = 211,808.58 × 103,130.64
  4. Step 4: Simplify right side
    153,460.80x = 21,843,954,412.89
  5. Step 5: Solve for x
    x = 21,843,954,412.89/153,460.80
  6. Step 6: Final answer
    x = 142,342.24

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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.